Mia vs Sidney

Baby Name Comparison — 2026

Popularity Comparison

Mia Rank #5
Sidney Rank #1,374

Mia is more popular, ranked #5 vs #1374 for Sidney.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Mia ___

  • Mia Rose
  • Mia Grace
  • Mia Jane
  • Mia Claire
  • Mia Elizabeth
  • Mia Louise

Sidney ___

  • Sidney James
  • Sidney Charles
  • Sidney Arthur
  • Sidney George
  • Sidney Philip
  • Sidney Thomas

Sibling Name Ideas

Names that pair well as siblings.

If you choose Mia

Liam Noah Sophia Olivia Ava

If you choose Sidney

Shelby Beverly Evelyn Reginald Stanley

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Mia or Sidney more popular?

Mia is more popular, ranked #5 compared to Sidney at #1374 in the United States.

What do Mia and Sidney mean?

Mia means "mine, beloved" (Scandinavian origin). Sidney means "from Saint Denis" (Anglo-Norman French origin).

Are Mia and Sidney boy or girl names?

Mia is primarily a girl name. Sidney is primarily a boy name.

More Comparisons

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← Full profile: Mia ← Full profile: Sidney Browse all baby names